Correction: Today I went to the Shanghai JiaoTong university for the new students' registration. Business English was my major(second bachelor), and I only want to learn specialized courses. What is your question?

Oh, I forgot to address the online part. When I went back to graduate school for another major, I was hesitant to have online courses. I was surprised how well the online classes went! It was convenient also.

With your previous experience, I think that taking courses for specialized English in business situations is a great idea. I hope the courses are interesting for you.